Results 91 to 100 of about 83,866 (252)

The black hole mass-galaxy age relation [PDF]

Monthly Notices of the Royal Astronomical Society, 2000
We present evidence that there is a significant correlation between the fraction of the mass of a galaxy that lies in its central black hole and the age of the galactic stellar population. Since the absorption-line indices that are used to estimate the age are luminosity-weighted, they essentially measure the time since the last significant episode of ...
Merrifield, M. R., Forbes, Duncan, Terlevich, A. I.   +2 more
openaire   +3 more sources

Saving Bambi from the mower? Using a drone with thermal camera to evaluate a low‐tech scaring technique to reduce roe deer fawn mortality during grass harvest

Wildlife Biology, EarlyView.
Roe deer is a species that hides their neonates as an anti‐predator strategy. This may prove efficient against mammalian predators, such as the red fox; however, it might be an ecological trap as large numbers of fawns are killed by tractors with harvesters each year during grass harvest.
Thomas Vogler, Neri H Thorsen, Simen Pedersen   +2 more
wiley   +1 more source

High-redshift Galaxy Candidates at z = 9–10 as Revealed by JWST Observations of WHL0137-08

The Astrophysical Journal, 2023
We report the discovery of four galaxy candidates observed 450–600 Myr after the Big Bang with photometric redshifts between z ∼ 8.3 and 10.2 measured using James Webb Space Telescope (JWST) NIRCam imaging of the galaxy cluster WHL0137−08 observed in ...
Larry D. Bradley, Dan Coe, Gabriel Brammer, Lukas J. Furtak, Rebecca L. Larson, Vasily Kokorev, Felipe Andrade-Santos, Rachana Bhatawdekar, Maruša Bradač, Tom Broadhurst, Adam Carnall, Christopher J. Conselice, Jose M. Diego, Brenda Frye, Seiji Fujimoto, Tiger Y.-Y Hsiao, Taylor A. Hutchison, Intae Jung, Guillaume Mahler, Stephan McCandliss, Masamune Oguri, Marc Postman, Keren Sharon, M. Trenti, Eros Vanzella, Brian Welch, Rogier A. Windhorst, Adi Zitrin   +27 more
doaj   +1 more source

The Extraordinary `Superthin' Spiral Galaxy UGC7321. I. Disk Color Gradients and Global Properties from Multiwavelength Observations

, 1999
We present B- and R-band imaging and photometry, H-alpha narrow-band imaging, NIR H-band imaging, and HI 21-cm spectroscopy of the nearby Sd spiral galaxy UGC7321. UGC7321 exhibits a remarkably thin stellar disk with no bulge component.
Aoki T. E., Barteldrees A., Bergvall N., Bouchet P., Cox A. L., de Blok W. J. G., de Blok W. J. G., de Grijs R., de Jong R. S., Disney M. J., Firmani C., Gerritsen J. P. E., Guibert J., Hamabe M., J. S. Gallagher III, Just A., Karachentsev I., Karachentsev I., Kodaira K., L. D. Matthews, Lequeux J., Makarov D. I., Makarov D. I., Sage L. J., Sasaki T., Secker J., van der Kruit P. C., W. van Driel, Xilouris E. M., Zasov A. V.   +29 more
core   +2 more sources

The age-metallicity relation in the thin disk of the galaxy [PDF]

Astronomy Reports, 2011
16 page, 7 figures, accepted 2011, Astron.
Marsakov, V. A., Koval', V. V., Borkova, T. V., Shapovalov, M. V.   +3 more
openaire   +2 more sources

‘A Sort of Armed Argument’: Ireland's Civil War of Words

History, EarlyView.
Abstract This article sets out to contribute to the study of the languages of European civil wars through outlining and analysing the deployment of language as a weapon by the opposing sides of the Irish independence movement that split over the terms of the Anglo‐Irish Treaty of December 1921.
DONAL Ó DRISCEOIL
wiley   +1 more source

Nucleosynthesis Clocks and the Age of the Galaxy

, 2001
8 pages, 2 figures, 1 table; To appear in Astrophysical Ages and Time Scales, ASP Conference Series, eds. T. von Hippel, N.
Truran, J. W., Burles, S., Cowan, J. J., Sneden, C.   +3 more
openaire   +2 more sources

Preserving evidence integrity in full file system extractions: Assessing hash inconsistencies and potential solutions

Journal of Forensic Sciences, EarlyView.
Abstract Smartphone manufacturers' enhanced privacy and security measures, such as File‐Based Encryption (FBE), have disrupted traditional data extraction techniques, necessitating the adoption of Full File System Extraction (FFS). FFS requires booting a smartphone, decrypting its UserData partition, and accessing files individually, a process that ...
Sanghyun Yoo, Yunji Park, Doowon Jeong
wiley   +1 more source

Out There No One Has a Right to Die

Bioethics, EarlyView.
ABSTRACT The eventual goal of space exploration is to colonize exoplanets and their moons outside our solar system. This is a dangerous and immoral endeavour. The extraterrestrial life forms encountered would be hostile, vulnerable or both, and the descendants of the original pioneers would be involuntarily exposed to hazardous conditions and ...
Matti Häyry
wiley   +1 more source

JWST View of Four Infant Galaxies at z = 8.31–8.49 in the MACS J0416.1−2403 Field and Implications for Reionization

The Astrophysical Journal
New JWST/NIRCam wide-field slitless spectroscopy provides redshifts for four z > 8 galaxies located behind the lensing cluster MACS J0416.1−2403.
Zhiyuan Ma, Bangzheng Sun, Cheng Cheng, Haojing Yan, Chenxiaoji Ling, Fengwu Sun, Nicholas Foo, Eiichi Egami, José M. Diego, Seth H. Cohen, Rolf A. Jansen, Jake Summers, Rogier A. Windhorst, Jordan C. J. D’Silva, Anton M. Koekemoer, Dan Coe, Christopher J. Conselice, Simon P. Driver, Brenda Frye, Norman A. Grogin, Madeline A. Marshall, Mario Nonino, Rafael Ortiz III, Nor Pirzkal, Aaron Robotham, Russell E. Ryan Jr, Christopher N. A. Willmer, Nathan J. Adams, Nimish P. Hathi, Hervé Dole, S. P. Willner, Daniel Espada, Lukas J. Furtak, Tiger Yu-Yang Hsiao, Qiong Li, Wenlei Chen, Jean-Baptiste Jolly, Chian-Chou Chen   +37 more
doaj   +1 more source